Answer:
2x² + 7x - 13
Explanation:
so the equation is 3(x² - 1) - (x² -7x + 10).
let’s say x=3.
3(3² - 1) - (3² - 7 • 3 + 10) = 26
now we have to find which equation is equivalent to 26, because now this will be much easier as we substituted x for 3.
after doing all the math, i found out that 2x²+ 7x - 13 is equivalent to the expression. this is because both equations share the answer of 26, which makes them equivalent. hope this helped!